“…At present, human computer interaction based on three-dimensional (3D) depth information has become highly attractive in the areas of image processing and computer vision, which further promotes the development of 3D depth acquisition technology. In addition, the recently developed 3D depth sensors, such as the Microsoft Kinect (Microsoft Corporation, Redmond, Washington, DC, USA) [ 1 ], have been applied in more fields, such as gesture recognition [ 2 , 3 , 4 , 5 ], intelligent driving [ 6 , 7 ], surveillance [ 8 ], 3D reconstruction [ 9 , 10 ], and so on. 3D depth acquisition technology measures the distance information between objects and a depth sensor.…”